Yes,on average, when you look at this group of 40 or 50 twins reared apart, when you look at the average, they are just about the same.

平均而言，当研究这40或50组被分开抚养的双胞胎，大体看来，他们是一样的。

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You look at identical twins, monozygotic twins who share the same genetic profile.

同卵双胞胎，他们拥有相同的基因谱。

哈佛公开课 - 幸福课课程节选

The same when you look at the average of individuals and twins.

同样，当你平均地看这些双胞胎。

哈佛公开课 - 幸福课课程节选